GE SG 300, Installation Manual

Page: 20 / 40

NEC SECTION 210-20 (a)
Table 310-16. Allowable Ampacities of Insulated Conductors Rated O Through 2000 Volts, 60°C Trough
90°C (140°F Trough 194°F) Not More than Three Current-Carrying Conductors in Raceway, Cable, or
Eart7h (Directly Buried), Based on Ambient Temperature of 30°C (86°F).
Temperature Rating of Conductor (See table 310-13)
Size 60°C (140°F) 75°C (167°F) 90°C (194°F) 60°C (140°F) 75°C (167°F) 90°C (194°F)
AWG
or
kcmil
Types
TW, UF
Types
FEPW, RH, RHW,
THHW, THW,
THWN, XHHW,
USE, ZW
Types
TBS, SA, SIS, FEP,
FEPB, MI, RHH,
RHW-2, THHN,
THHW, THW-2,
THWN-2, USE-2,
XHH, XHHW,
XHHW-2,ZW-2
Types
TW, UF
Types
RH, RHW,
THHW,
THW, THWN,
XHHW, USE
Types
TBS, SA, SIS,
THHN, THHW,
THW-2,
THWN-2, RHH,
RHW-2, USE-2,
XHH, XHHW,
XHHW-2,
ZW-2
COPPER ALUMINIUM or COPPER-CLAD ALUMINIUM
18 --- --- 14 --- --- ---
16 --- --- 18 --- --- ---
14
20 20 25 --- --- ---
12 25 25 30 20 20 25
10 30 35 40 25 30 35
8 40 50 55 30 40 45
6 55 65 75 40 50 60
4 70 85 95 55 65 75
3 85 100 110 65 75 85
2 95 115 130 75 90 100
1
110 130 150 85 100 115
1/0 125 150 170 100 120 135
2/0 145 175 195 115 135 150
3/0
165 200 225 130 155 175
4/0 195 230 260 150 180 205
250
215 255 290 170 205 230
300 240 285 320 190 230 255
350 260 310 350 210 250 280
400
280 335 380 225 270 305
500 320 380 430 260 310 350
600
355 420 475 285 340 385
700 385 460 520 310 375 420
750 400 475 535 320 385 435
800
410 490 555 330 395 450
900 435 520 585 355 425 480
1000
455 545 615 375 445 500
1250 495 590 665 405 485 545
1500 520 625 705 435 520 585
1750
545 650 735 455 545 615
2000 560 665 750 470 560 630
CORRECTION FACTORS
Ambient
Temp. (°C)
For ambient temperatures other than 30°C (86°F), multiply the allowable ampacities shown above by the appropriate factor
below
21 - 25 1.08 1.05 1.04 1.08 1.05 1.04
26 - 30 1.00 1.00 1.00 1.00 1.00 1.00
31 - 35
0.91 0.94 0.96 0.91 0.94 0.96
36 - 40 0.82 0.88 0.91 0.82 0.88 0.91
41 - 45 0.71 0.82 0.87 0.71 0.82 0.87
46 - 50 0.58 0.75 0.82 0.58 0.75 0.82
51 - 55 0.41 0.67 0.76 0.41 0.67 0.76
Modifications reserved Page 20/40
OPM_SGS_ISG_M22_M30_2US_V010.doc Installation Guide SG Series 225 & 300 UL S2